Diabolical: Story, Cast and Series Facts

Story and premise

Perfect on the outside, mental on the inside. Even the most kind-hearted people have a dark side looming. Diabolical looks at the minds of murderers with the question: "why did they do it?" Take a trip through the picture-perfect life and see the events that lead to a brutal murder. The tension builds throughout each episode as you dive deeper into the psychological workings of the murderer. With key insights from forensic psychologists and psychiatrists along with criminal profilers, a full analysis of the behavioral underpinnings and key moments in each crime will be on display. Diabolical shows how much people can conceal, until they blow.

Series details

• Title: Diabolical
• Format: Documentary
• Language: English
• Genres: Crime
• Premiere date: 2018-01-01
• Final broadcast date listed: 2020-05-12
• Status in TVmaze: Ended
• Network listed by TVmaze: Investigation Discovery
• Network country: United States
• Typical episode runtime: 60 minutes
• TVmaze community rating: 7.3/10
• TVMaze ID: 18421
• IMDb ID: tt3420210
• TVDB ID: 287565

Seasons in the TVmaze catalogue

• Season 1: premiered 2018-01-01; final listed air date 2018-05-10; episode order: 11.
• Season 2: premiered 2019-05-21; final listed air date 2019-07-16; episode order: 10.
• Season 3: premiered 2020-03-10; final listed air date 2020-05-12.

Source and licence

Adapted from Diabolical on TVmaze. The synopsis is reproduced as plain text; catalogue facts, cast and season records are selected and reformatted. This adapted text is available under CC BY-SA 4.0, following the TVmaze API licence. Network and web-channel credits identify the service listed in this source; they do not establish current streaming availability.